Simply enable it for NVIDIA users by default. It works the same across every distribution, and in fact, every OS. Google are just as cowardly as Adobe were.
Why should Google reward Nvidia's selfish behaviour in Gnu or Free Software ecosystem? When Nvidia make it possible to run their graphics cards with free drivers and still get all the features, then by all means, I agree. Until that is the case, there is no particular reason to reward Nvidia, however.
I find you lack of faith in the forth dithturbing. - Darse ("Darth") Vader